Nysx, Will Of The Cenobite

Flying, vigilance
Whenever a spell or an ability would cause
creatures you control to gain +X/+X, or +X/+Y,
they gain twice +X/+X, or +X/+Y instead. (This ability doesn't affect the number of counters gained.)
"The other worlds heard of the Gitaxians' whispers.
We brought phyrexia's magnificence to them" - Elesh
Norn, Grand Cenobite